﻿/*
 * Copyright (c) 2009, Thiago M. Sayao <thiago.sayao@gmail.com>
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 *  * Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of the author nor the names of its contributors may be 
 *    used to endorse or promote products derived from this software without 
 *    specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 */

using System.Configuration;

namespace DotNetBurner
{
    public class FeedSubstitution : ConfigurationElement
    {
        [ConfigurationProperty("from", IsRequired = true)]
        public string From
        {
            get
            {
                return this["from"] as string;
            }
        }

        [ConfigurationProperty("to", IsRequired = true)]
        public string To
        {
            get
            {
                return this["to"] as string;
            }
        }
    }

    public class FeedSubstitutionCollection : ConfigurationElementCollection
    {
        public new FeedSubstitution this[string key]
        {
            get
            {
                return base.BaseGet(key) as FeedSubstitution;
            }
            set
            {
                if (base.BaseGet(key) != null)
                {
                    base.BaseRemove(key);
                }

                this.BaseAdd(value);
            }
        }

        protected override ConfigurationElement CreateNewElement()
        {
            return new FeedSubstitution();
        }

        protected override object GetElementKey(ConfigurationElement element)
        {
            return ((FeedSubstitution)element).From;
        }
    }

    public class FeedSettings : ConfigurationSection
    {
        private static FeedSettings settings = ConfigurationManager.GetSection("FeedSettings") as FeedSettings;

        public static FeedSettings Settings
        {
            get
            {
                return settings;
            }
        }

        [ConfigurationProperty("FeedSubstitutions")]
        public FeedSubstitutionCollection Substitutions
        {
            get
            {
                return this["FeedSubstitutions"] as FeedSubstitutionCollection;
            }
        }

        public static string GetFeedSubstitute(string feedLink)
        {
            FeedSubstitution subst = FeedSettings.Settings.Substitutions[feedLink];

            if (subst != null)
                return subst.To;

            return feedLink;
        }
    } 
}
